Much research has also been conducted on everolimus and other mTOR inhibitors as targeted therapy for use in a number of cancers. It is marketed by Novartis under the tradenames Zortress (USA) and Certican (Europe and other countries) in transplantation medicine, and Afinitor in oncology. Everolimus also available with Biocon with the brand name of Evertor.
Female fox and gray squirrels that are at least two years old have two litters per year, younger females have only one litter per year. Average litter size is two to four (southern flying squirrels may have litters of up to seven young), with young weaned around eight weeks of age.
Fox squirrels can mate all year long; however, most mating occurs in two mating seasons on from December to February and another from May until June. Females can begin to have babies at 6 months old and have one or two litters per year. Males can begin to mate at 10 to 11 months old. Female fox squirrels are pregnant for about 44 days. Average litter size is 3 young but it can range from 1 to 6 young per litter.